Aunt Marge : You mustn't blame yourself about how this one turned out, Vernon. It's all to do with blood. Bad blood will out.
Aunt Marge : What is it the boy's father did, Petunia?
Aunt Petunia : Oh, nothing. He didn't work; he was unemployed.
Aunt Marge : And a drunk too, no doubt?
Harry : That's a lie!
Aunt Marge : What did you say?
Harry : My dad wasn't a drunk!
Aunt Marge : Oh, don't worry Petunia. I have a very firm grip.